Stern frame structure



Sept. 14, 1943. c. w. ALLEN swmm FRAME STRUCTURE Filed Feb. 7, 1942 INVENTOR.

- BY 93%! W i ATTORNEYS.

Patented Sept. 14, 1943 plication February '8 Claims. retina-e57) "lclairne'W-Anefi, u -Terrance; calirjf- 7, 1942,"ser a1 No. 429.883

boats and the like, 'andfparticul'arly the sternend thereof ,to proy ide a stern frame which is designedf to receive and support a; propelling mechanism wherebyithe' boat is propelled reversed -and steere'd, and further, tofpro Videfa stern rram -wmen' receives and secures the gar hoard andfirst broad" plates of the boat, and materially simplifies their attachment. l

The, stern'structure -and the propelling mocha;

nism secured thereby is shown by way of. illustration in the accompanying drawingjin which: Figure 1 is a plan view of alife boatshowin'g the propelling mechanism applied theretojj h. Figure 2 is f centr a'l vertical longitudinal' s'ec tion of the rear end offthe boat, said view showing the construction ofthe'stern and also the manner in which the propelling mechanism is supported and secured; v I Figure 3 is a. perspective viewof'afportion of the stern of the boat, showing the keel, the stern frame and the manner'i n which the garboard and first broad plates are sg'ecured in place; and, Figured is a perspectiveview of. the. type of handle applied to .the'push and .pull rod.

Referring to, the drawing in detail, and par ticularly Figures 1 to, 3, A' indicates ,i'n general a life boat, 2"the seats. or thwarts extending arose, wisethereo'f, and 3 the stern .seatlin theboat. Thebjoatinay b planked qr built rm jieta butin'either instance is shaped. to form a pro- I peller' recess 13 which isguarded by'extending'the. keel 4 rearwardly under the recess and thenlupwardlytoforrn' ai'stern post 5.? 'Disposed under the seat 3 is a housing "generally indicated at .C.,

Forming a supportffor the rear. end of said. housing is a bearing sleeve, 6, andf'forming asupport for the-forward end ofthehousi ng. is a forked standard'lls'ee particularly Figure 2).

v Before describing the construction of thefstern in detail, it should be pointedoutithat theboat here shown is constructed of metal and that the stern structure in itself forms the subject mat ter of the present invention. 4

'Referring to Figures 2. and}, it Will benoted from plates; but whether constructed in one man ner or the other'thereare twdrear platesl3'-'8,-

, propeller shaft.

and a forwardly extending tongue 9 which is secured to the keel 4 many suitable manner. The

tongue and'the plates are reenforcedby a' vertical"r'ib ID. The rear end of "the rib extends upwardly as shown at l I, and is welded or otherof 'the stern'frame,'but'also to the plates 8 at thefpoints-indicated {at l5 and 1 l6. After the garboard plates have been applied, the first'broad a1 platesl' lo maybe applied and they are secured in placeby being welded or riveted'to the upper edges of the plates 8, the'sternpOSt'E and to the upper edge of'-the-'garboard plates. "This construction is important as it very materially simplifies the shaping'andforming of thegarboard plates, and to that extent simplifies the stern structure of the boat.'- This is made possible by the provision of the sternframel The stern frame in turn reenforces and strengthensthe stern structure, andat the same time, forms a support ior'thesleeve G an'd the housing of the -pro pelling'meohanism generally I indicated at Q.

The bearing sleeve '6 has a'rlange'j formed. on its lowr'end. Thisffiange engages the seat in the welllzandis boltedthereto as indicated at 20. Extending through the bearingsleeve and the well is 'the steering column 2|. Thelower end of the steering column isfianged as at l9 and within-thehousing C 'andis manually operated by a rod Sla. The rod extends forwardly in the boat and longitudinally thereof as shown in Figures 1 and 2. 'Bearingm'embers'n are placed on the seats "or thwarts o f'the boat and the rod extends'through thesame and is thereby held in place and "guided; Upon the rod are secured sleeve 14 (see Figure 4 Eachsleeve is provided with two or more'handles 15 which maybe grasped bythe occupants of the boat'to impart a push and-'pull'motion'to the rod, said motion being transmitted through'the driving mechanismtontainedfin' the housing C to drive the v Tofurther' race and secure the housing C and the propelling mechanism contained'therein' against the push and pull forces applied through means of the push rod 6|, a brace 90 is connected to the rear end of the housing and to the upper end of the stern frame D (see Figure 2).

From the foregoing it is obvious that the boat is manually propelled by persons in the boat seated on opposite sides of the push and pull rod. For instance, a person sitting on the seat 2a may be facing the bow of the boat and will grasp the handle 15a. Another person sitting on the seat 2 and facing the stern will grasp the handle I5. Two other persons similarly seated on the other side of the rod will grasp the other two handles. Thus, four persons can apply through a sleeve 74 a push and pull force, and as three, four or more sleeves 14 may be secured to the rod, twelve, sixteen or more persons in the boat can be employed to propel the same. In a sixty-person lifeboat recently tested, a speed of between five and six knots was readily maintained by sixteen men and with less effort thanwhen rowingwith cars, In fact, the speed referred to could not 'be obtained with oarsv even with a skilled crew. With the propelling mechanism here disclosed, nofskill is required. In fact,; any man or woman can takehisor her turn.

The propelling mechanism permitspropulsion, steering and reverse, and a rudder and-reversing mechanism may thus be entirely eliminated. I The propeller and the torpedo-shaped housing supporting the same, regardless of the position assumed, is protected by the keel 4 while in shallow water, as it is positioned between the bottom of the stern frame D- and thekeel; This is an important feature when beaching a boat; also the propeller and its housing being substantially under the stem-and within the recess ispro; tected from impact withother. objectssuch as boats, wharves, etc. The stern frame Dreenforces and strengthens the stern structure of boat; it simplifies the construction; it simplifies the shaping and attachment of the garboard plates, and it forms a support and a protector for the propelling mechanism.

While these and other features ofthe present invention have been more or jlessispecifically described and illustrated, I wish it understeodthat various changes-may be resorted to within the scope of the appended claims, and that the materials and finish of the several parts employed may be such as the judgment and experience of the manufacturer may dictate or other conditions may demand. I V it Having thus described my invention, whatI claim and desire to secure by LettersPatent is:

1. In a boat structure of the character described, a stern frame having a tongue bent to form a recess under the stern of the boat, a pair of plates at the rear end of the tongue, one on each side thereof and forming anintegral part of the tongue, said platesbeing shaped to conform to the rear ends of the garboard plates of the boat, and a keel extending under the-tongue and bent at the rear end to form a stern post, said tongue being secured at the frontend to the keel and at the rear end to the stern post.

2. In a boatstructure of the character described, a stern frame having a tongue bent to form a recess underthe stern of the boat, a pair of plates at therear end of the tongue, one on each side thereof and forming an integral part of the tongue, said plates being shaped to conform to the rear ends of the gar'board ipl'atesofrthe boat, a keel extending under the tongue, and bent at the rear end to form a stern post, said tongue being secured at the front end to the keel and at the rear end to the stern post, and a vertical rib formed integral with the tongue and xtending from end to end thereof, the rear end of said rib extending upwardly parallel with the stern post to reenforce the same.

3. In a boat structure of the character described, a stern frame having a tongue bent to form a recess under the stern of the boat, a pair of plates at the rear end. of the tongue, one on each side thereof and forming an integral part of the tongue, said plates being shaped to conform to the rear ends of the garboard plates of the boat, a keel extending under the tongue and bent at the rear end to form a stern post, said tongue being secured at the front end to the keel and at the rear end to the stern post, a vertical rib formed integral with the tongue and extending from end to end thereof, the rear end of said rib extending upwardly parallel with the stern post to reenforce the same, saidrib being expanded adjacent its rear end toform a well, and a seat formed in said well for the reception and support of a propelling mechanism.

4. In a boat structure of the character described, a stern frame having a tongue bent to form a recess under the stern of the boat, a pair of plates at the rear endofthe tongue, one on each sidethereof and forming'an integral part of the tongue, said plates being shapedto conform to the rear ends of the garboard plates of the boat, .a keel extending under the tongueand bent at the rear. end to form a sternpost, said tongue being secured [at the front end tofthe keel and at the rear lend to the stern post, and a pair of garboard plates secured at their-rear ends to the tongue and to the rear endsof the side plates; s

5. 'In a boat structure. of the character described, a sternfraine having atongue bent to form a, recess under the stern of thevboat, a pair of plates at the rear end of the tongue,,one' on each side thereof and forming an integral part of the tongue, said plates'bei'ng shaped to conform to the rear ends of the garboard plates of the boat, a keel extending under the tongue and bent at the rear end to form a stern post,jsaid tongue being secured at the front end to the keel and at the rear end to the stern post,a pairof garboard plates secured at their rear ends to the tongue and to the rear ends of the sideplates, and apair of broad plates secured at their rear endsto the stern post and to the upper outer edges of the side plates and the garboard plates.

6. In a boat structure of the character described, a stern frame having a tongue bent to form a recess under the stern of the boat, a pair of plates at the rear end of the tongue, one on each side thereof and forr'ningan integral. part of the tongue, 'said plates being shaped to conform to the re'ar ends of the garboard plates of the boat, a keel extending under the tongue, a pair of garboard plates secured to the plates on the stern frameand to the keel, anupright ex tension on the rear end of the stern frame, and a pair of broad plates secured at their rear ends to said extension and alongtheir lower edges to the side plates ofthe stern frame and to the garboard plates. I

7. In a boat structure of the character described, a stern frame having a tongue bent to form a recess under the stern of the boat, a pair of plates at the rear end of the tongue, one on each side thereof and forming an integral part of the ton ue, saidplates beingshaped to conform of the rib and along their lower edges to the side 10 plates of the stern frame and to the garboard plates.

8. In a boat structure of the character described,- a stern frame having a tongue bent to form a recess under the stern of the boat, a pair of plates at the rear end of the tongue, one on each side thereof and forming an integral part of the tongue, said plates being shaped to conform to the rear ends of the garboard plates of the boat, a rib formed integral with the tongue and extending from end to end thereof, said rib being extended substantially vertically above the plates on the stern frame, an expanded portion in the rib to form a well, and a seat in said well.

CLARENCE W. ALLEN. 

